calc  limits
posted by terra .
I have been trying to figure out these limit problems and I get stuck on trying to move the function around to make it possible to solve.
The first one is:
lim sinx  cosx / tanx  1
x> (pi/4)
All I've gotten so far is to replace tanx with sinx/cosx but I don't even know if that's the way to go...
the second is:
lim sqrt(a + 2h)  sqrt(a) / h
h>0
I tried multiplying by the conjugate, but when I multiply things out, I get stuck at:
2h / h*sqrt(a+2h) + sqrt(a)
pleaseeee help me. I have no idea how to move on from here; I'm terrible at figuring out what to do next in these situations.
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